Correct Answer: A

Rationale: Corrected Rationale: Calcium channel blockers can cause bradycardia, so it is important for the client to monitor their heart rate regularly. This helps detect any significant changes in heart rate that may require medical attention. Choice B is incorrect because there is no need to avoid potassium-rich foods with calcium channel blockers. Choice C is incorrect as increasing fluid intake is not specifically related to calcium channel blockers. Choice D is incorrect as calcium channel blockers are usually taken with or without food, depending on the specific medication, but not specifically on an empty stomach.

Correct Answer: D

Rationale: The correct answer is D, severe abdominal pain. After a liver biopsy, severe abdominal pain is a critical finding that requires immediate reporting as it may indicate internal bleeding or damage to the liver. The other vital signs provided in choices A, B, and C are within normal limits and may not be directly related to complications post liver biopsy. Therefore, the priority is to address the severe abdominal pain promptly to prevent any further complications.

Correct Answer: B

Rationale: Turning and repositioning a client is within the scope of practice of a UAP. This task helps prevent pressure ulcers and assists in maintaining the client's comfort and mobility. Assessing pain level post-surgery requires clinical judgment and interpretation, making it appropriate for a PN or RN. Administering medication like insulin involves critical thinking and potential adjustments based on the client's condition, which is the responsibility of a licensed nurse. Changing postoperative dressings involves wound assessment, infection control, and knowledge of aseptic techniques, tasks that fall under the purview of a PN or RN.

Correct Answer: B

Rationale: The correct answer is B: White blood cell count and sputum culture. Monitoring white blood cell count and sputum cultures is essential to assess the effectiveness of the antibiotic in treating the respiratory tract infection. Changes in white blood cell count can indicate the body's response to infection, while sputum cultures help determine if the antibiotic is targeting the specific pathogens causing the infection. Choices A, C, and D are incorrect because platelet count, red blood cell count, hemoglobin A1c, glucose tolerance test, arterial blood gases, and serum electrolytes are not directly related to evaluating the effectiveness of an antibiotic in treating a respiratory tract infection.

Correct Answer: A

Rationale: The correct intervention for a client with acute kidney injury (AKI) experiencing hyperkalemia is to administer IV calcium gluconate. Calcium gluconate helps stabilize the myocardium and prevent life-threatening arrhythmias in hyperkalemia by antagonizing the cardiac effects of high potassium levels. Choice B, administering sodium polystyrene sulfonate (Kayexalate), is used to lower potassium levels in the gastrointestinal tract but is not the priority in acute severe hyperkalemia. Choice C, administering insulin with dextrose, helps drive potassium into cells but is not the priority in a client at risk for arrhythmias due to hyperkalemia. Choice D, restricting potassium intake in the client's diet, is a long-term strategy but is not the immediate priority in managing acute hyperkalemia.